Jack attachment



March 9, 1937.

JACK ATTACHMENT Filed March 1, 1935 v INVEN TOR GAHPBELLM-HUNTER BY @www ATT QRNEY c. M. HUNTER 2,073,012

Patented Mar. 9, 1937 UNITED STATES PATENT OFFICE 4 Claims.

5 conditions where the ordinary practice of applying the lifting force directly to a part of the object to be lifted is not feasible. For example, in the case of deeply mired Vehicle wheels, it is frequently impossible to follow the usual practice of inserting a jack beneath the axle of the mired wheel or Wheels. There are also numerous instances where the jacking up of machinery and other objects by direct application of a jack cannot be accomplished owing to lack of an accessible abutment surface for the jack to act against. The present invention has been developed to take care of these and similar contingencies and consists in the provision of a plate adapted to be fastened, in an upright position, on the object to be lifted and provided with an outwardly directed projection with which a jack or other lifting device may be conveniently engaged.

Proceeding now to a more detailed description reference will be had to the accompanying drawing, wherein I have shown one specific embodiment of this invention as designed more particularly for use in jacking up automobile or other vehicle wheels. In this drawing- Fig. 1 is a view, in rear elevation of a jack at- O tachment designed in accordance with this invention.

Fig. 2 is a View, in side elevation, of the attachment appearing in Fig. 1.

r Fig. 3 is a view, in front elevation, of the at- "tachment appearing in Fig. 1.

Fig. 4 is a vertical sectional view through the attachment as it appears when placed on a wheel hub, the latter being also in vertical section.

Referring more particularly to the drawing, 5 designates a flat metal plate provided with a central opening 6, a step-like projection I, and three fastening lugs 8, 9 and Ill. The projection l is made integral with or welded to the outer surface of the plate and extends outwardly at right angles 0 thereto. In the upright position of the plate this projection lies in a substantially horizontal plane between the upper edge of the plate and the central opening 6. The upper and lower surfaces of 0 said projection are preferably made flat as indicated at la. and lb. The lugs 8, 9 and I0 are here shown as arranged in triangular formation, the two upper lugs 8 and 9 being located above the opening 6 and inclined so that their upper 5 edges are closer together than their lower edges.

The remaining lower lug I0 is centered below the opening 6 with its lower portion substantially parallel with the inner surface of the plate from which it is spaced so as to permit this lug to be readily hooked over a wheel hub flange, as hereinafter explained. The plate 5 is adapted to be attached to a wheel hub l l as shown in Fig. 4 so that a jack or other lifting device may be readily placed beneath the projection 'l and operated into lifting engagement therewith. In this connection it will be noted that the plate 5 is arranged in an upright position against the outer surface of the hub flange 12 with the lug l0 hooked over the lower portion of said flange so that the plate is thus prevented from swinging outwardly from the hub when the lifting force, applied to the projection I, is transmitted to the wheel hub by the lugs 8 and 9 which are disposed for lifting engagement with the overlying edge portions of the hub flange.

As shown in the present drawing, the plate 5 is of triangular contour and is secured to the wheel hub with the apex of the plate pointing downwardly. It will be understood, however, that the exact shape or contour of the plate is not an essential feature and may be varied to suit particular circumstances. The same applies to the shape and arrangement of the fastening lugs 8, 9 and Hi. It will also be understood that, in applying the plate 5 to other types of wheels or to other objects such as machinery and the like, the lugs 8, 9 and I0 may be replaced by other suitable means for securing the plate in place on the wheel or object to be lifted. These and various other modifications are considered to fall within the scope and spirit of this invention as defined by the appended claims.

Having thus described my invention, what I claim is:

1. A device of the character described comprising a plate provided with a central opening, a pair of laterally spaced lugs extending from one side of said plate above said opening, a third lug extending from the same side of the plate below said opening and a step-like projection extending outwardly from the opposite side of the plate at a point between the opening and the upper edge of the plate.

2. A device of the character described comprising a plate provided with a central opening, a'pair of laterally spaced lugs extending from one side of said plate above said opening, said lugs being inclined so that their upper edges are closer together than their rear edges, a third lug extending from the same side of the plate below said opening and having a depending portion disposed parallel with the adjacent side of the plate but spaced therefrom and a step-like projection extending outwardly from the opposite side of the plate directly above said opening.

3. A jack-step attachment for vehicle wheels comprising a plate provided with an axle receiving opening entirely surrounded by solid portions of the plate, means for fastening said plate in an upright position on a vehicle wheel with the axle of the wheel protruding through said opening and a step-like projection formed integral with said plate, said projection lying above said opening in the applied position of the plate and being disposed to extend outwardly from the wheel in a substantially horizontal plane to a point beyond the wheel axle.

4. A jack-step attachment for vehicle wheels comprising a plate provided with an axle receiving opening entirely surrounded by solid portions of the plate, means for fastening said plate in an upright position on a vehicle wheel, the axle of the wheel adapted to protrude through said opening and a step-like projection on said plate, said projection lying above said opening in the applied position of the plate and being disposed to extend outwardly from the wheel in a substantially horizontal plane to a point beyond the wheel axle.

CAMPBELL M. HUNTER. 

